Question for Jason Chaffetz

The Salt Lake Tribune is reporting that Jason Chaffetz is working to “overturn action by the D.C. City Council that would allow medical marijuana usage in the nation’s capital.”

Here’s what he had to say:

“Marijuana is a psychotropic drug classified under Schedule I of the federal Controlled Substances Act as having ‘high potential for abuse,’ ‘no currently accepted medical use in treatment in the United States,’ and a ‘lack of accepted safety for use of the drug…under medical supervision.’ While certain of these principles may be open to significant debate within segments of the medical community, and among pro-legalization/decriminalization groups, I am opposed to re-classification and decriminalization efforts. And while derivatives of marijuana are available in pill form for medicinal purposes, smoked marijuana is a health danger, not a cure, and therefore remains a harmful and dangerous drug for people of all ages.”

Ready for my question?

WHERE in the Constitution is the federal government given the authority to criminalize OR decriminalize this plant? Is it the same place that the opposing political party claims to get the power to control health care?